... hammar head material: 45# rough machining, normlizing and finish machining Forged Hammar Head1,Type: Different forgings with customers' design2,Features ... : Forged Hammar Head3,Standards: ASTM, ASME, DIN, SIS and EURONORM 4, ... any question , please contact me . Thank you .Jiangyin Zenkung Forging Forged hammer head